Malicious PDF — malware analysis report

Static analysis result for SHA-256 a94d17d7819edd15…

MALICIOUS

PDF

34.5 KB Created: 2020-03-23 16:04:13 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: e0f59b6863b113a44a57fd19dce14664 SHA-1: 6e79a88cc65f3967073d80b3a67ed9cb3d8da008 SHA-256: a94d17d7819edd150ed220e4a2dc643a2b63880ee625935c216aa9984bf9dfa2
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of external links, many of which are numerically or generically named, suggesting a link farm or SEO manipulation tactic. The document body, though partially corrupted, contains a reference to 'Regal cinema 20 sheffield ohio' and metadata indicating it was generated by wkhtmltopdf, aligning with the heuristic 'PDF_SEO_LINK_FARM'. The primary goal appears to be directing users to a network of potentially malicious or deceptive websites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://fit1athletics.com/uploads/1/3/0/4/130479123/130479123.html#regal+cinema+20+sheffield+ohio
    • http://gendernaturalist.com/uploads/1/3/0/3/130323554/mizafovizesum_joleloxelaxor_konupuwitud.pdf
    • http://autodiscover.felinefabulous.com/uploads/1/3/0/6/130620698/jubesew.pdf
    • http://professionallawncareandlandscapingservicesnm.online/uploads/1/3/0/5/130550667/7174409.pdf
    • http://blackandpetrichor.com/uploads/1/3/0/5/130589249/2923539.pdf
    • http://doodadsandfandangles.com/uploads/1/3/0/6/130620450/5421066.pdf
    • http://agpmav.com/uploads/1/3/0/7/130740200/nalolupimi.pdf
    • http://toneboxdigital.com/uploads/1/3/0/2/130272585/3408594.pdf
    • http://dragonsoul.mobi/uploads/1/3/0/7/130776239/6782362.pdf
    • http://iappsmusic.com/uploads/1/3/0/6/130620450/7297360.pdf
    • http://bars4bitcoin.com/uploads/1/3/0/2/130287866/a4a3db.pdf
    • http://easypopcornceilingremoval.com/uploads/1/3/0/8/130873921/vemugemomefolep-mopusi.pdf
    • http://whodidifuck.com/uploads/1/3/0/6/130604348/154fb45f7.pdf
    • http://adjusters.quickcatclaims.com/uploads/1/3/0/7/130776828/9732840.pdf
    • http://ijjackel.com/uploads/1/3/0/5/130545249/titiwixovifawajut.pdf
    • http://empowermentforwomen.com/uploads/1/3/0/4/130483565/gumevilofav.pdf
    • http://colombiaen20dias.360digital.co/uploads/1/3/0/2/130288329/5279107.pdf
    • http://www.jessinthereal.com/uploads/1/3/0/5/130588839/xadanex.pdf
    • http://newlifedestination.com/uploads/1/3/1/0/131071137/d227b3c.pdf
    • http://ducati-innovations.com/uploads/1/3/0/5/130588165/2537807.pdf
    • http://www.cyanotypeoriginals.co.uk/uploads/1/3/1/0/131071021/minizevunano.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005da9.bin
cbf502ca663775e0d40ac62a085c22922d5a44bff099e75eb0847b0afbccea3e
pdf-font-stream PDF embedded font (sfnt) at offset 0x5DA9 7932 bytes